The High-intensity Activated Cross Walk signal is designed to allow pedestrians to cross busy streets by stopping traffic. Think of the HAWK signal like any other push-activated pedestrian signal but without any vehicular traffic controls. HAWK will typically be placed on long tracks of highway where there’s a lot of high-speed traffic and not many ways for pedestrians to get across.
To drivers, the signal looks like a triangular arrangement of a traditional red-yellow-green stoplight. Once a pedestrian presses the Walk button, the lower light, which is yellow in color, will flash to alert drivers that a pedestrian wants to cross. The flashing yellow light will then turn a solid yellow color to warn motorist to slow down. Finally, the top two lights will turn red, requiring cars to stop to allow pedestrians to cross. Once the pedestrian is off the crosswalk, the top two lights will remain red and flash on and off. This means drivers can start driving again, but to be cautious.
When there are no pedestrians present no light signal will illuminate on the HAWK signal, so it won’t distract motorists.